Des catégories à la catégorisation

摘要

This tribute is the opportunity for a melancholic return to topics with which we were occupied, Jean-Pierre Barthélemy and myself, during the 90’s at Télécom Bretagne. It is hardly surprising that we focused on the relationship between natural categories and logic, given that Jean-Pierre was trained within the French school of category theory, and that his first papers belonged to the growing field of categorical logic. Analysing the research pursued under his benevolent direction, I will trace the influence of this specific approach to logic and structures.